It is, in fact, a fulacht fia, a type of prehistoric cooking site found in enormous numbers across Ireland, typically dating to the Bronze Age. The usual interpretation is that stones were heated in a fire, then dropped into a water-filled trough to bring it to a boil, cooking meat wrapped in straw or hides. The spent, fire-cracked stones were raked out and discarded, accumulating over repeated use into the distinctive burnt mounds that survive today.

This particular example measures roughly ten metres north to south and eight metres east to west, rising to about 1.2 metres at its highest point. Its horseshoe shape, characteristic of the type, opens to the west, where a small mound of earth and rocks covers the entrance. The southern half of the mound has been cut through by a narrow channel, which may relate to drainage or later disturbance. The site lies in heavily overgrown boggy ground, the kind of low, wet terrain that fulachtaí fia seem almost to have preferred, possibly because reliable water was essential to their function. Notably, a second possible fulacht fia has been identified approximately 110 metres to the north-east, suggesting the area may have seen repeated or extended use across prehistoric times.